(GitHub #2) Added DBIx::NinjaORM->get_current_time().
(GitHub #2) Added tests for DBIx::NinjaORM->get_current_time().
(GitHub #2) Added test table and supporting class for real timestamps.
(GitHub #2) Retrofitted insert() to support custom created/modified formats.
(GitHub #2) Fixed constraint name.
(GitHub #2) Fixed package name.
(GitHub #2) Fixed function name.
(GitHub #2) Added tests for inserted timestamps.
(GitHub #2) Fixed Pg time function.
(GitHub #2) Generalized time check in case tests run slow.
(GitHub #2) Added tests for timestamps in modified field during update().
(GitHub #2) Retrofitted update() to use timestamp in modified field.
(GitHub #2) Fixed test to work on all database types.
(GitHub #2) Fixed date pattern for PostgreSQL.
(GitHub #2) Fixed test description.